<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Sample Layout</title>
    <link rel="stylesheet" href="mixin.css">
</head>
<body>
    <header><img src="images/acme-widgets.jpg" alt="ACME Widgets"></header>
    <section id="wrapper">
        <div id="content-area">
            <h1>Welcome to ACME widgets</h1>
            <p></p>
            <p></p>
        </div>
        <div id="left-side">
            <ul>
                <li><a href="#">Mission</a></li>
                <li><a href="#">History</a></li>
                <li><a href="#">Executive Team</a></li>
                <li><a href="#">Contact Us</a></li>
            </ul>
        </div>
        <div id="right-side">
            <p><strong>SPECIAL WIDGET DEAL!</strong></p>
            <p>Buy three widgets and get a fourth for free. Act now!</p>
        </div>
    </section>
    <footer>Copyright information usually goes here in the footer.</footer>
</body>
</html>
